.net - Excluding Deleted Records From Returned Set Using VFPOLEDB Provider For FOXPRO Database?

May 23, 2012

VS 2010, VB.NET, WINFORMS. In my app i have a need to import foxpro database tables and exclude the deleted records. The problem is that FOXPRO tables keep deleted items inside the same table. I have tried using DELETED=NO in the connection string but vb throws "Format of the initialization string does not conform to the OLE DB specification."

I really am stuck. I can add records to a table ok . when i close and restart my code the new records are still there but deleteing does not work. I delete the records, they disappear. I close and restart the code agian but the deleted records return. this is my code.

I'm converting some RDO code to ODBC Provider code in .NET.The problem is parameter names were not specified in the orignal code, but param values were retrieved by parameter name after the command was executed.Is there anyway to have parameter names populated by the provider once the command is executed so calling code can access params by name.Let me show you an example of the declaration of param and accessing of it.

[Code]...

You can now see how this "used to work in RDO/VB". For some reason it would accept this and know what the param names were after execution. I imagine it had to do another round trip to the db to get this info.

Is there anyway to mimic this behaviour in .NET for ODBC Provider (using Oracle)? Or am I stuck manually specifying the param names in the code (I understand this is the better option, but wondering what the alternative is to match the original code as closely as possible).

The SomeId value is the primary key of the related table. This issue is that there will not always be records in the Bookings table with a Ref value of Someid - so the query throws the following error.

I have seen others have got around this problem with catching the error, but from reading up on this and as per the error information it seems there should be a solution (in VB.NET) to cast the query or some of the fields in the query to nullable types?

Error is as follows:

The cast to value type 'Int32' failed because the materialized value is null. Either the result type's generic parameter or the query must use a nullable type.

i have 2 computers - a Server and a Client pc which is running on local area network with MICROSOFT SQL SERVER 2008 R2 Developer kit at the main pc and Client computer will need to connect to SQL SERVER at main pc using connection string.Let me named server computer as 'MAGNA-PC' and the client pc as 'LAC-PC' and database name is 'db_referafriend' so the code for MAGNA-PC(server) connection string is:[code] i GOOGLE and YOUTUBE for almost 2 weeks before i post . I know that i need to configure the sql configuration manager and enable tcp/ip also add a new port at firewall to allow remote connection also add the sqlserver.exe and sqlbrowser in firewall and I have also chosen "Using both TCP/IP and named pipes" under Remote Connections in the SQL Server 2005 Surface Area Configuration. and all of this doesnt work!

below i have a piece of code, i have to calculate the next working day +5 from today but this calculation has to calculate days from monday to friday and exclude weekends(saturday & sunday) and also excluse public holidays.i have tried but what i got is that it calculates 5days without excluding anything.example if a record is taken out monday, the return date must be the next monday but with this code calculates weekends as well it says return date is saturday.

Public Function AddWorkingDays(ByVal DateIn As DateTime, _ByVal ShiftDate As Integer) As DateTime' Adds the [ShiftDate] number of working days to DateIn

Is there a way to get a list of all files in a folder but exclude a certain filetype/extension? Or is the only way to do it is to get all files & loop through them & exclude the filetype with an If statement?

I have a string array Array1 and a string array A2. I want to combine these in a 3rd array A3 but excluding duplicate values. Can this be done through lambda expressions or only through iterating through the array and checking array.Contains()?

Is there any way to select items in a list that aren't contained in another? For example:list1 = From t In list1 Where Not list2.Contains(t.column1)That gives me the error:Value of type 'Integer' cannot be converted to '<anonymous type>'which makes sense, since list2.Contains is expecting the same type as list2. However, the list types are different. I want only to select based on column comparisons.

I am uploading Excel File and below is my code. I have no problems so far with filling my dataset but when I tried to validate required fields, I get the error that some values are missing. I checked the Excel files and noticed that there are hidden rows that the user was not able to checked when he's adding values.[code]...

I'm trying to connect foxpro table (dbf) to VB.NET. I'm trying to display the records of that table to listview in VB.NET. Here is my code:I got an error message here, the error says "cannot open the file"

I am creating a VB.NET application that will use a FoxPro database as it's main datasource.The problem I've got is that I can browse existing databases and pull out data with no problems at all but as soon as I try and create my own database I get an error message saying "One or more errors occurred during processing of command." (which is helpfully vague).[code]

Consume a regular asmx web service in a dll projectI would like to open DBF-files, including the NTX-indexes in VB.NET which are used in FoxPro / Alaska Xbase. how to open both DBF nd NTX, because only open DBF-files would result in corrupt index (NTX) files.

I wanted to write a small piece of vb code to synchronize a few FoxPro dbf tables to SQL tables that having the same structure or at least a few fields that i selected. I had tried a code which I found on the net that running row by row and column by column to update the SQL tables but this code is too slow. In my dbf table it contains around 3000 records at least.

I dusted off VB.net, and now im trying to connect to a local FoxPro DB. Problem is, its not working. Ive been at this for about an hour or so, trying many misc things, but without any luck. [Code]. 'C:aaaCF21000.DBF' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides. Suggestions? That path is 100% valid, I can copy/paste that and open up the Database without error. I also tried other code I found on the web, some of them I cant even get them to run.

I am trying to compute time off, I have a datetimepicker which allow user to select a day he wishes to start leave and a textbox to specify no of days applying for.Now I wand to use dateadd function to calculate resumption date excluding Weekends.

Given an input string like the following:I, Need, Some, Coffee, Before, I, "Fall, Asleep" I need to split this into parts like so:

INeedSome

[code]...

Splitting on the comma character alone is easy enough, but how can I handle the quotationmarks? Regular expressions is not on my strong side, and I have been googling for quite a bit without any good results.

I have been tasked with converting Foxpro programs and forms into Visual Basic .NET and web application. Does anybody know of a tool I can use to convert Foxpro programs and forms and dbf into Visual Basic.net?

I'm using VB.NET 2008 with a DataGridView and I'm interfacing to a Visual Foxpro 6 database using the vfpoledb.1 driver. When I change a value in the description field, it changes in the DataGridView but the database never gets updated. Do I need to use code to force the changes to take place?Here's the code I'm using:

I think what I have here is an environmental issue. When I attempt to fill a dataset from a VFP table I am getting an error message that says "Index Not Found". The reason I feel its environmental is because the process was working perfectly fine last week. The client I am trying to run this program for runs it once per month to integrate one of their FoxPro systems with SQL. It's been in working order since November of last year, but suddenly now I'm getting this error. Some things I have looked at already are updating VFP drivers for both OleDB and ODBC.

I have a foxpro table <b> INVENT.DBF</b> linked in MS ACCESS. When I tried to do a search in the table from vb.net application, it is taking a long time. So I want to index the foxpro table and then use it for search.

Here is the sample code I wrote in vb.net <i>cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:database.mdb;Persist Security Info=False")cn.open()cmd = New OleDbCommand("Create INDEX itmno_idx ON INVENT(ITEM_NO) ", cn)cmd.ExecuteNonQuery()</i>

But I am getting error "Cannot execute data definition statements on linked data sources" What needs to be done to index a linked foxpro table using VB.NET.

As part of a larger application, I need to IMPORT (not link) a FoxPro 2.6 DBF into a Access DB.I toyed with using a Access MODULE and in the module, using the docmd.TransferDatabase method.I have looked for days at different samples and I cannot seem to find the answer.This application is intended to be distributed with NO ASSURANCE the user will have the FoxPro OLE driver installed. Knowing that the ODBC driver will most likely be installed as part of MDAC, it is pretty safe to use the ODBC driver that is already installed - Visual FoxPro Tables

I am new to VB and trying to use it to update and merge some foxpro free tables. I have a connection and trying to use the update command but getting an exception. Once the code hits the ExecuteNonQuery line it throws the exception {"Command contains unrecognized phrase/keyword."} Do I need to create the command using parameters? Just not sure. Is the connection string correct - I did not get any issue with the cn.Open

i am using vb/vb.net and the database is visual foxpro 6.0 then i want to create the tables from the application using sql statement.i need to add the number field into the table. i can not add the number field in the tableres.open "CREATE TABLE Customer ( CustName char(50), CustId int(2))",conXavier

I have this piece of code wich works perfectly when inserting records into one table using records from another table. My question is that now i need to create another table by using records from 3 other tables (tables are related). Can i use aliases on the column names, like on Oracle SqlPlus? How will be the syntax of the 'INSERT INTO SQL statement?

Dim MyConn As ADODB.ConnectionDim MyRecSet As ADODB.RecordsetDim tmpSQL As StringMyConn = New ADODB.Connection

I am working on creating a program that records animal data (wombats) and stores it into a database, using vb.net. I am trying to add new records into a database but every time I click add, to execute that, there are duplicate records that gets added. How do i write the code so itonly adds it one time. I am using a data reader. Here is the

This code is intended to grab the ID of the deleted record, the user who deleted the record, and the date and time the record was deleted and insert it into a hostical table.So far, once a record is deleted, the code grabs more than one deleted record.